Device for securing metallic protecting-caps to fuses.



. No. 796,271. PATENTED AUG. 1, 1905. K. WIESER.

DEVICE FOR SECURING METALLIC PROTECTING GAPS T0 FUSES.

APPLICATION FILED JUNE 16.1904.

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KARL WVIESER, OF RUTTENSCHEID, NEAR ESSEN-ON-THERUHR, GERMANY,

ASSIGNOR TO FRIED- KRUPP, AKTIENGESELLSCHAFT, OF ESSEN-ON- THE-RUHR,GERMANY.

DEVICE FOR SECURING METALLIC PROTECTING-CAPS TO FUSES Specification ofLetters Patent.

Patented Aug. 1, 1905.

Application filed June 16, 1904. Serial No. 212,901.

To all whom it may concern:

Be it known that I, KARL VI IEsER, a subject of the Emperor of Germany,and a resident of Riittenscheid, near Essen-on-the-Ruhr, Germany, haveinvented certain new and useful Improvements in Devices for SecuringMetallic Protecting-Caps to Fuses, of which the following is aspecification.

This invention relates to devices for securing metallic protecting-capsto the fuse inde' pendently of the projectile in such a manner as tomake it possible to store and convey the capped fuse separated from theprojectile. If in such devices a metallic ring adapted to be torn off isused for securing the protecting-cap to the fuse, great diflicultiesarise in connecting such ring with the fuse-body, as it is impossible toobtain any sufliciently durable connection by using adhesives (such asshellac, 860.) by reason of the limited space. Furthermore, when theouter parts of the fuse are made of aluminium it seems impossible tosolder the ring to the fuse-bod y. The

present invention has for its object to overcome the said difficultiesby engaging the removable metallic ring which forms the connectionbetween the cap and the fuse-body with an undercut in the fuse-body.

In the annexed drawings, Figure 1 .is a side view of one embodiment ofmy invention, the cap being placed on the fuse. Fig. 2 is a side view ofthe fuse with the cap, the latter in section. Figs. 3, 4:, 5, and 6 areviews similar to Figs. 1 and 2, but showing other embodiments of myinvention.

The protecting-cap is preferably constructed of sheet metal and has anoval shape conforming to that of the fuse.

In the embodiment represented in Figs. 1 and 2 the lower part (thefuse-shoulder) of the fuse B is provided with a conical slope 7/, whichis covered by a narrow ring C of sheet metal. One end of the ring 0 isbent upwardly and terminates in a loop 0. The ring is at its upper edgesoldered (at (Z) to the protecting-cap A. The ring and the part of thecap that covers the lower part of the fuse thus keep the cap firmly tothe fuse B.

In the embodiment represented in Figs. 3

and 4 a narrow groove 6 is cut in the outer face of the fuse-shoulder atits lower termi- The sheet-metal ring C is'in this instance of L-shapedsection, one of its arms engaging the groove 5 while the other arm issoldered to the cap, (at cl.) The upwardlybent end of the ringterminates in a loop 0, and also in this instance the protecting-cap Ais held firmly to the fuse B by means of the groove 6 and the ring-armengaging the same.

In the embodiment shown in Figs. 5 and 6 a groove 5" is turned in theouter face of the fuse-body near its lower extremity. The groove is ofsemicircular section, anda wire ring G, one end of which terminates in aloop 0', rests in this groove. The ring C is also in this instancesoldered to the edge of the protecting-cap (at (Z) and secures the samefirmly to the fuse B.

In order to separate the protecting-cap from the fuse, the loop 0 of thering C (0 C is grasped, and the ring is separated from the cap and fromthe fuse by a pull tangential to the periphery of the fuse. During thelast part of the separating movement of the ring the resistance of thesolder is greater than the force that holds the cap and the remainingportion of the ring to the fuse. Consequently the separation of the ringfrom the fuse results in the removal of the cap, and no specialmanipulation for this purpose is required.

As the cap proper need not be torn open, the separation can be easilyand rapidly effected, and the cap can be constructed of rather strongsheet metal. The possibility of making the cap of strong sheet metal isvery important, as thin-walled protecting-caps cannot standtransportation. By reason of the direct connection of the ring with thefuse no parts of the protecting-cap or of the securing m cans remain onthe fuse when the cap is torn off, and a bad influence on the flight ofthe projectile is thus avoided.

I desire it to be understood that I may make various changes in form,proportion, and minor details without departing from the spirit of myinvention.

Having described my invention, what I claim is* 1. In a fuse, thecombination with the fusebody having an undercut near the lowerextremity thereof, of a protecting-cap adapted to lit over the fuse anda band secured by a weakened connection to and surrounding the loweredge of said cap and engaging said undercut to form a means for securingthe cap to the fuse.

2. In a fuse, the combination with the fusebody having a circumferentialundercut near the lower extremity thereof, of a protecting cap adaptedto fit over the fuse, and a band secured by a weakened connection to thecap around the lower edge thereof and engaging said undercut to form ameans for securing the cap to the fuse.

3. In a fuse, the combination with the fusebody having an undercut nearthe lower extremity thereof, of a protecting-cap constructed of a singlepiece of sheet metal and adapted to fit over the fuse, and a bandsecured by a weakened connection to and surrounding the lower edge ofsaid cap and engaging said undercut to form a means for securing the capto the fuse.

4. In a fuse, the combination with the fusebody-having a circumferentialundercut near the lower extremity thereof, of a protectingcapconstructed of a single piece of sheet metal and adapted to tit over thefuse, and a band secured by a weakened connection to the cap around thelower edge thereof and engaging said undercut to form a means for securing the cap to the fuse.

5. In a fuse, the combination with the fusebody having-a circumferentialundercut near the lower extremity thereof, of a protectingcapconstructed of a single piece of sheet metal and adapted to [it over thefuse, and a band secured by a weakened connection to the cap around thelower edge thereof, and engaging said undercut to form a means forsecurng the cap to the fuse, said band having a free end extendingoutside of the cap and terminating in a loop for tearing off the band.

6. In a fuse, the combination with the fusebody havinga circumferentialundercut near the lower extremity thereof, of a protectingcapconstructed of a single piece of sheet metal and adapted to fit over thefuse, and a sheet-metal band soldered to said cap along its lower edgeand engaging said undercut to form a means for securing the cap to thefuse.

The foregoing specification signed at Dusseldorf this 31st day of May,1904.

, KARL WIESER.

In presence of PETER LIEBER, WILLIAM ESSENWEIN.

